16Mbits of NOR + 1Gbit NAND dual-die memory chip is only 8x6mm
The W25M161AW provides 16Mbits of serial NOR Flash memory for the board s boot code, and 1Gbit of serial NAND for its Linux operating system.
The stacked-die construction of the SpiStack products and the software Chip Select capability developed by Winbond enable a serial NOR Flash die for fast boot and a serial NAND die for high memory density to be accommodated in an 8-terminal WSON package with a standard 8x6mm footprint and pin-out.
The W25M161AW saves board real-estate for compact designs with the LS1012A, while still providing 1Gbit of storage for a full featured Linux OS. It offers a high data-transfer rate of 83MB/s via a Quad Serial Peripheral Interface (QSPI) and the technology also supports a two-chip dual-quad interface which gives a maximum data transfer rate of 166MB/s. This high-speed Read operation, some four times faster than existing serial NAND memory devices offer, means that the new W25N01JW chip can replace SPI NOR Flash memory in automotive applications such as data storage for instrument clusters or the Center Information Display (CID).
This is important for automotive OEMs because the adoption of more sophisticated graphics displays in the instrument cluster, and larger display sizes of 7 and above in the CID, is increasing system memory requirements to capacities of 1Gbit and higher. At these capacities, serial NAND Flash has a markedly lower unit cost than SPI NOR Flash, and occupies a smaller board area per Mbit of storage capacity. Both the W25M161AW and W25N01JW are available now in production volumes.
Winbond Electronics – www.winbond.com
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